1. Fan frame: it is formed in one step due to the use of advanced automatic processing technique, the thick zinc coating (180g/m2) ensures great corrosion resistance, the bottom outlet design makes fan structure more reasonable.
2. Belt pulley: The V-shaped hub made of aviation aluminum alloy is light, tensile, high-strength, and unlikely to break.
3. Fan blade: six stainless steel blades which are formed in one step are aesthetic, durable and resistant to deformation, the blade passed the dynamic balance test and its reasonable angle ensures maximum air flow and minimum noise.
4. Shutter: High strength hot galvanized plate, the automatic opening-closing device makes it possible to open and close louvers completely, maintain a 90-degree opening angle to ensure louvers are windproof, rainproof and dust-proof.